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538950a1b7
Expose socket options for setting a classic or extended BPF program for use when selecting sockets in an SO_REUSEPORT group. These options can be used on the first socket to belong to a group before bind or on any socket in the group after bind. This change includes refactoring of the existing sk_filter code to allow reuse of the existing BPF filter validation checks. Signed-off-by: Craig Gallek <kraig@google.com> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
29 lines
830 B
C
29 lines
830 B
C
#ifndef _SOCK_REUSEPORT_H
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#define _SOCK_REUSEPORT_H
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#include <linux/filter.h>
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#include <linux/skbuff.h>
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#include <linux/types.h>
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#include <net/sock.h>
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struct sock_reuseport {
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struct rcu_head rcu;
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u16 max_socks; /* length of socks */
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u16 num_socks; /* elements in socks */
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struct bpf_prog __rcu *prog; /* optional BPF sock selector */
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struct sock *socks[0]; /* array of sock pointers */
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};
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extern int reuseport_alloc(struct sock *sk);
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extern int reuseport_add_sock(struct sock *sk, const struct sock *sk2);
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extern void reuseport_detach_sock(struct sock *sk);
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extern struct sock *reuseport_select_sock(struct sock *sk,
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u32 hash,
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struct sk_buff *skb,
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int hdr_len);
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extern struct bpf_prog *reuseport_attach_prog(struct sock *sk,
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struct bpf_prog *prog);
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#endif /* _SOCK_REUSEPORT_H */
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